Ronaldo had not scored for Real since netting the victor in the Club World Cup final before Christmas.
As the physio walked him off the pitch to receive treatment, Ronaldo asked for his smartphone and proceeded to check the damage to his valuable mug.
That and a return to 4-3-3 should see some improvement from Madrid and it will be much needed as Paris Saint-Germain lie in wait in the Champions League next month.
It was the visitors who broke the deadlock in the 23rd minute when Adrian Lopez turned home Lucas Perez's cross from close range.
Benzema didn't find the net himself, but with the French striker on the pitch Real Madrid looked more risky, more fluid.
Ronaldo's form tells the story of Zidane's men this season.
Madrid took the game to their opponents from the restart and had a couple chances for left back Marcelo and also Cristiano Ronaldo before Nacho found the back of the net for the equalising goal 1-1 after 31 minutes.
Real Madrid's Casemiro, right, vies for the ball with Deportivo Coruna's Aldo during a Spanish La Liga soccer match between Real Madrid and Deportivo Coruna at the Santiago Bernabeu stadium in Madrid, Sunday, Jan. 21, 2018.
Cristiano Ronaldo produced "his most Cristiano Ronaldo moment ever" during Real Madrid's emphatic 7-1 win against Deportivo on Sunday afternoon.